cs2200.c File Reference

#include <avr32/io.h>
#include "compiler.h"
#include "cs2200.h"
#include "twi.h"
#include "gpio.h"
#include "board.h"

Macros
Expected Protocol Version
#define	CS2200_EXPECTED_DEVICE_ID   0x00
#define	CS2200_DEVICE_CTRL_LOCKED   0x00
Device ID Register Bit-Masks
#define	CS2200_DEVICE_ID_REG_MASK   0xF8
#define	CS2200_DEVICE_ID_REG_OFFSET   3
#define	CS2200_DEVICE_CTRL_UNLOCK_REG_MASK   0x80
#define	CS2200_DEVICE_CTRL_UNLOCK_REG_OFFSET   8

Functions
void	cs2200_enter_test_mode (void)
	Enter into the test mode. More...
void	cs2200_freq_clk_adjust (uint16_t lsh_ratio)
	Function used to adjust the CLK_OUT frequency (LSW only). More...
void	cs2200_freq_clk_out (uint32_t ratio)
	Function used to program the CLK_OUT frequency. More...
void	cs2200_leave_test_mode (void)
	Leave the test mode. More...
void	cs2200_read (uint8_t address, void *buffer, uint8_t len)
	Reads data from the CS2200 chip. More...
bool	cs2200_setup (uint32_t out_freq, uint32_t fosc)
	Function used to initialize the chip and communication interface. More...
void	cs2200_switch_off (void)
void	cs2200_switch_on (void)
void	cs2200_write (uint8_t address, const void *buffer, uint8_t len)
	Writes data into the CS2200 chip. More...
int	cs2200_write_ex (uint8_t address, const void *buffer, uint8_t len)
	Writes data into the CS2200 chip using the non blocking release of the TWI driver. More...

#define CS2200_DEVICE_CTRL_LOCKED   0x00

#define CS2200_DEVICE_CTRL_UNLOCK_REG_MASK   0x80

#define CS2200_DEVICE_CTRL_UNLOCK_REG_OFFSET   8

#define CS2200_DEVICE_ID_REG_MASK   0xF8

Referenced by cs2200_setup().

#define CS2200_DEVICE_ID_REG_OFFSET   3

Referenced by cs2200_setup().

#define CS2200_EXPECTED_DEVICE_ID   0x00

Referenced by cs2200_setup().

void cs2200_enter_test_mode

(

void

)

Enter into the test mode.

Referenced by cs2200_setup().

void cs2200_freq_clk_adjust

(

uint16_t

lsh_ratio

)

Function used to adjust the CLK_OUT frequency (LSW only).

References CS2200_REG_LSW_RATIO_ADDR, and cs2200_write_ex().

Referenced by usb_stream_resync().

void cs2200_freq_clk_out

(

uint32_t

ratio

)

Function used to program the CLK_OUT frequency.

Referenced by aic23b_codec_setup(), and usb_stream_input().

void cs2200_leave_test_mode

(

void

)

Leave the test mode.

void cs2200_read	(	uint8_t	address,
		void *	buffer,
		uint8_t	len
	)

Reads data from the CS2200 chip.

TWI chip address to communicate with.

Register address/commands inside the slave chip.

Length of the TWI data address segment (1-3 bytes).

Where to find the data to be written.

How many bytes do we want to write.

References twi_package_t::addr, twi_package_t::addr_length, twi_package_t::buffer, twi_package_t::chip, CS2200_TWI, CS2200_TWI_SLAVE_ADDRESS, twi_package_t::length, twi_master_read(), and TWI_SUCCESS.

bool cs2200_setup	(	uint32_t	out_freq,
		uint32_t	fosc
	)

Function used to initialize the chip and communication interface.

References _32_BITS_RATIO, CS2200_DEVICE_ID_REG_MASK, CS2200_DEVICE_ID_REG_OFFSET, cs2200_enter_test_mode(), CS2200_EXPECTED_DEVICE_ID, and CS2200_NB_TRIES.

Referenced by main().

void cs2200_switch_off

(

void

)

void cs2200_switch_on

(

void

)

void cs2200_write	(	uint8_t	address,
		const void *	buffer,
		uint8_t	len
	)

Writes data into the CS2200 chip.

TWI chip address to communicate with.

Register address/commands inside the slave chip + auto increment.

Length of the TWI data address segment (1-3 bytes).

Where to find the data to be written.

How many bytes do we want to write.

References twi_package_t::addr, twi_package_t::addr_length, twi_package_t::buffer, twi_package_t::chip, CS2200_TWI, CS2200_TWI_SLAVE_ADDRESS, twi_package_t::length, twi_master_write(), and TWI_SUCCESS.

int cs2200_write_ex	(	uint8_t	address,
		const void *	buffer,
		uint8_t	len
	)

Writes data into the CS2200 chip using the non blocking release of the TWI driver.

TWI chip address to communicate with.

Register address/commands inside the slave chip + auto increment.

Length of the TWI data address segment (1-3 bytes).

Where to find the data to be written.

How many bytes do we want to write.

References twi_package_t::addr, twi_package_t::addr_length, twi_package_t::buffer, twi_package_t::chip, CS2200_TWI, CS2200_TWI_SLAVE_ADDRESS, twi_package_t::length, and twi_master_write_ex().

Referenced by cs2200_freq_clk_adjust().